Brush for cleaning artificial dentures



May 19, 1931. I J. F. MANLEY 1,805,587

BRUSH FOR CLEANING ARTIFICIAL DENTURES Filed Sept. 9, 1929 INVENTOR ATTORN EYJ Patented May 19, 1931 UNITED STATES PATENT OFFICE The invention relates to brushes particularly designed for the cleansing of artificial dentures and it is the object of the invention to obtain a construction which is adapted for use on various types of dentures such as full sets, partial dentures, removable bridges, etc. To this end the invention consists in the peculiar construction as hereinafter set forth.

In the drawings:

Figure 1 is a plan view of the handle for my improved brush without the bristles;

Figure 2 is a side elevation thereof;

Figure 3 is an end elevation;

Figure 4 is a view similar to Figure 1 showing the bristles secured to the handle;

Figure 5 is a perspective view illustrating the manner of cleaning a denture with the brush;

Figure 6 is an elevation illustrating the manner of cleaning a clasp or small portion of a denture, and

Figures 7, 8, 9 and are cross sections respectively on lines 77, 88, 9-9, 10*10 of Figure g My improvement consists essentially in a brush-having a rigid handle A terminating in a bristle holding portion B of peculiar shape. This bristle holding portion as shown particularly in Figures 1 to 3 and 7 to 10 is of varying cross section and of a varying curvature of contour of the general form of a tapering spiral. Thus specifically the portion B adjacent to the handle is of the oblong cross section illustrated in Figure 8 and from thisv point gradually changed to the substantially circular cross section on line7 7 as shown in Figure 7. The contour is also curved with the radius of the portion nearest the handle less than the radius of the portion at the outer end; also the curvature on the convex and concave sides is-such as to produce a gradual taper towards the outer end C. As indicated in Figure 2 the handle A which is of the oblong cross section as shown in Fi ure 10 is curved longitudinally at D so as to lower than the plane of the handle. This facilitates manipulation in access to all parts of the denture.

%ring the'portion B in a plane somewhat I I SCRANTON, PENNSYLVANIA ARTIFICIAL DENTURES 9, 1929. Serial No. 391,433.

The bristles E are attached to the portion A B so as to project radially outward from the convex edge thereof and radially inward from the concave edge. There are also bristles projecting in different radial directions with respect to the cross section. These bristles are trimmed so that in the central portion of the convex side they are considerably longer as indicated at E and towards the outer end are reduced in length as indicated at E This facilitates the use of the brush either upon a full denture or in connection with partial dentures and portions thereof such as clasps, etc.

In the manufacture of my improvement the handle may be made of any suitable material but preferably a material which may be molded to form. The bristles may also be of suitable grade and are attached to the supporting handle in any suitable manner.

In use, the operator can find access to all portions of artificial dentures of different types and sizes by using different portions of the brush and by suitable manipulation is enabled to thoroughly cleanse the parts.

What I claim as my invention is:

'1. A brush for artificial dentures comprising a handle portion terminating in a curved portion of increasing radius from the handle to its outer end upon both inner and outer peripheries and being also of a gradually decreasing cross section, and bristles secured to and projecting from said curved portion on both convex and concave sides thereof.

2. A brush for artificial dentures comprising a handle of flat oblong cross section lpi'erminating in a curved portion which nearest the handle is of slightly increased width of cross section and tapers in cross section towards its outer end with a gradual change from the oblong to the circular, and bristles secured to and projecting from the curved portion radially with respect to the cross section thereof. n

3. A brush for artificial dentures compris s ing a handle of oblong cross section longitudinally curved in a plane transverse to the. major axis of the cross section and merging into a portion of round and tapering cross section in a helical form and bristles attached to the round cross section portion and pro- 4 j ecting radially therefrom, said bristles being of greatest len h in the central portion of the helix and diminishing in length towards the outer en-l thereof.

In testimony whereof I affix my signature.

J. FRANCIS MANLEY. 

